Metal roof



March 10, 1936. K. ROTH 2,033,304

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#4014212 /c/'QZ 1| InvG/2Enl; /ff/ /Qoh W Patented Mar. 10, 1936 "UNITEDSTATES PATENT ori-*ice METAL 11.00Fv Karl Roth, Tem Haute, ina.Application March s, 1935, serial No. 9,954 Y 3 Claims.

'Ihis invention relates to the art of roofs and particularly to a metalroof. It is a primary object of my -invention to provide sheets of metalso formed that they may be readily overlapped 5 one on the other andsecured to the sheathing of a roof so as to form a water tight structurefree of any possibility of leaks at the laps and also permitting readyattachment and securing to the sheathing.

A further primary object of my invention is to provide a lap joint whichwill prohibit the start of capillary action along the laps whereby waterwill not tend to enter under the laps at least under all ordinarycircumstances, but in l5 the event of an unusual rain, will then providefor an auxiliary water seal which is automatically Y secured by nailingthe sheets to the roof sheathing.

Other objects and advantages of my invention Fig. 2, a vertical sectionon the line 2-2 in Fig. 1.

Like characters of reference indicate like parts in the two views.

The roof is made up from a plurality of sheets generally designated bythe numeral Ill, each interchangeable with the other both as toappearances and as to dimensions. Each 'sheet I0 is formed to havelongitudinal ridges II extending thereacross in parallel spacedalignment. Each 40 ridge is preferably formed to have an upper areaparallel tothe major portion of the sheet. From that upper areaindicated by the numeral I2, Fig. 2, the metal is sloped symmetricallyfrom each side downwardly to the major part of the sheet.

The ridges II are so arranged on the sheet that one of the ridges isformed along a. longitudinal edge of the sheet, reference being now hadspecifically to that ridge II', Fig. 2, which would be along the lefthand edge in the present example. It is to be noted in this edge ridgeII', the upper area I2 is made to have the same width as the area I2 inthe other ridges and that from the area I2 the slope I3 extendsdownwardly into the major portion of the sheet. The distinction,

(Cl. 10S-18) however, over the other ridges is that on the outer edge,the sloping area I4 extending downwardly and outwardly from the upperarea I2 is out off much above the plane of the sheet proper so as toleave only a relatively short down- 5 turned leg.

Now along the other longitudinal edge of the same sheet, I provide aridge of a slightly different formation. Referring again to Fig. 2, thisridge I5 has an upper area I6 in the same plane 10 as that of the areasI2 in the other ridges, but the width of this area I6 is reduced fromthat of the areas I2. From the inner side of the area I6, the metalslopes downwardly by the leg I1 at the same angle as does the leg I3,forex- 15 ample, corresponding to the same sloped portions in the otherridges. However, from the outer edge of the area I6, I slope the metaldownwardly by a leg portion I8 at a sharper slope to have the lower endof that leg I8 terminate in the 20 plane of the major portion of thesheet. From the lower end of the leg I8 I lbend the metal sharplyupwardly to have the upturned and outwardly sloped leg I9, the upper endof which terminates below the level of the tops of the 25 various ridgesIl and, of course, the area I6.'

The proportions of the area I6, slope ofthe leg I8, slope of the leg I9,and length of the leg I9, are made such that when the next adjacentsheet is laid on the roof to have the ridge 3'0"Y II' overlap the ridgeI5, the leg I4 will lap down over the sloped leg I1 and be in actualcontact therewith over the upper portion thereof. Also the under side ofthe flat portion I2 will be in contact with and rest on the flat portionIii.l 35 The upper end of the leg I9 will bear against the under side ofthe slope I3 in a yielding manner. Now to secure the two sheets inposition along this joint formed by lapping as just described',

nails 20 are driven down through the at por- 40 tion I2, through theportion I6 and on down into the sheathing 2I thereunder. In driving thennails 20 in, the heads thereof will compressively draw the upper ridgedportion I2 against the under ridge portion I6 tending to cause thelegs'45 I8 and I9 to move from the dash line position, Fig. 2, to a positionsomewhat as indicated'by the solid lines, thereby increasing thepressure oi' 'the upper end Vof the leg I9 against the under side of theleg I3. The sheet is further secured 50 to the roof sheathing 2I bydriving nails 20 through the ilat portions of the other ridges.

Now in reference to the joint between adjacent sheets of metal as I haveabove described, it is to be noted that the lower end of the leg I4 is55 ency for waterto enter under the leg I l up over the leg I'I, thewater would have to be of sufilcient depth on the roof to have its levelat the under edge of the leg I4. 0f course, where the roof is properlysloped, any rain short of a cloudburst would not cause water to pile upthat high. In the structures heretofore employed, where the leg Ilv wascontinued on down to the bottom of the under leg I 1, any slight rainwould permit water to cover over the lower end of the leg I4 and thus acapillary action would be set up between the two legs tending to causethe water to travel upwardly therebetween. By reason of the shorter legI l, I prevent that capillary action under ordinary conditions.

Now for any reason should the capillary action be induced under the legI4 and water travel thereunder, the V-gutter formed between the legs I8and I8 will catch that water as it enters and ilows down the leg I8 andcause it to drain out at the lower end of the sheet. Any water tendingto travel on over under the flat portion .I2 and then down the leg I3 isintercepted by the upper end of the leg I9 bearing against the leg I3 soas to again direct water into the gutter. A further advantage is pointedout in that by reason of the spring-like pressure of the leg I9 of theone sheet against the sloped leg I3 of the other sheet, the joint ismaintained in a tight solid manner even though sun may expand the nailsand the roof itself, since the resiliency of the legs I8 and I9 is suchto take up such expansion.

While I have herein shown and described my invention in thevform aspreferred by me, it is obvious that structural changes .may be madewithout departing from the spirit of the invention, and I, therefore, donot desire to be limited to that precise form beyond the limitations asmay be imposed by the following claims.

I claim:

1. A roof comprising a plurality of side-lapped metal sheets havingraised ridges formed along the lapping edges, the ridge on theunderlapping sheet edge being formed by an inner leg sloping upwardlyand outwardly from the plane of the sheet to an upper flat portionparallel with the sheet, an outer leg sloping downwardly and outwardlyfrom the outer edge of said at portion to the plane of the sheetcontinuing around upwardly and outwardly therefrom to terminate in ashort upturned leg, the end of which -is below the elevation of saidflat portion; the ridge on the overlapping sheet edge being formed tohave a leg sloping upwardly and outwardly from that sheet back over theouter edge of said short leg to join an outer edge of a single atportion extending across to, on and over the flat portion of the firstridge, from the other edge of which single portion extends a shortdownturned leg along over the said inner leg of the rst ridge, the saidouter edge of the single flat portion being spaced beyond thecorresponding edge of the hat portion thereunder approximately above thelower end of said outer leg of the first ridge, and a nail passedthrough the two hat portions into an underlying roof carrying member,pulling the overlapping ridge downwardly into compressive contact withthe underlapping ridge which tends to spread laterally thereunder.

2. A roof comprising a plurality of side-lapped metal sheets havingraised ridges formed along the lapping edges, the ridge on theunderlapping sheet edge being formed by an inner leg sloping ,upwardlyand outwardly from the plane of the sheet to an upper ilat portionparallel with the sheet, an outer leg sloping downwardly and out-Awardly from the outer edge of said ilat portion to the plane of thesheet continuing around upwardly and outwardly therefrom to terminate ina short upturned leg, the end of which is below the elevation of saidilat portion; the ridge on the overlapping sheet edge being formed tohave a leg sloping upwardly and outwardly from that sheet back over theouter edge of said short leg to join an outer edge of a single fiatportion extending across to, on and over the fiat portion of the firstridge, from the other edge of which single portion, extends a shortdownturned leg along over the said inner leg of the ilrst ridge, thesaid outer edge of the single ilat portion being spaced beyond thecorresponding edge of the flat portion thereunder approximately abovethe lower end of said outer leg of the first ridge, and a nail passedthrough the two at portions into an underlying roof carrying member.pulling the overlapping ridge downwardly into compressive contact withthe underlapping ridge which tends to spread laterally thereunder; saidshort leg bending sharply from said outer leg in said first ridge, saidbend shifting outwardly as said nail is seated.

3. A roof comprising a plurality of side-lapped metal sheets havingraised ridges' formed along the lapping edges, the ridge on theunderlapping sheet edge being formed by an inner leg sloping upwardlyand outwardly from the plane of the sheet to an upper flat portionparallelwith the sheet, an outer leg sloping downwardly and outwardlyfrom the outer edge of said :dat portion to the plane of the sheetcontinuing around upwardly and outwardly therefrom to terminate in ashort upturned leg, the end of which is below the elevation of said flatportion; the ridge on the overlapping sheet edge being formed to have aleg sloping upwardly and outwardly from that sheet back over the outeredge of said short leg to join an outer edge of a single at portionextending across to, on and over the flat portion of the first ridge,from the other edge of which single portion, extends a short downturnedleg along over the said inner leg of the first ridge, the said outeredge of the single iiat portion being spaced beyond the correspondingedge of the flat portion thereunder approximately above the lower end ofsaid outer leg of the ilrst ridge, and a nail passed through the two atportions into an underlying roof carrying member, pulling theoverlapping ridge downwardly into compressive contact with theunderlapping ridge which tends to spread laterally thereunder, the nailon being centered in the upper portion passing through the lower portionadjacent its outer edge.

KARLROTH.

